发明名称 |
OPTICAL FILMS AND PROCESS FOR PRODUCTION THEREOF |
摘要 |
<p>An optical film which contains little impurities and is excellent in physical properties and surface appearance, produced by melt-extruding an acrylic resin which has a glass transition temperature of 110 to 200°C and a viscosity of 250 to 1000Pa s as determined at a shear rate of 100(1/s) and a resin temperature of 270°C by the use of an extruder provided with either a barrier flight screw or a screw with a mixing section with the cylinder and die of the extruder preset at temperatures lower than the glass transition temperature of the acrylic resin plus 145 (°C); and a process for the production of the film.</p> |
申请公布号 |
WO2007116904(A1) |
申请公布日期 |
2007.10.18 |
申请号 |
WO2007JP57544 |
申请日期 |
2007.04.04 |
申请人 |
NIPPON SHOKUBAI CO., LTD.;TAKAGI, MASAHITO;NIWA, HIROKAZU |
发明人 |
TAKAGI, MASAHITO;NIWA, HIROKAZU |
分类号 |
G02B5/30;B29C47/14;B29K33/00;B29L7/00;B29L11/00;G02B1/04 |
主分类号 |
G02B5/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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